Contact Lufthansa Customer Service. Contacting Lufthansa Customer Service Center. Lufthansa is the premier airline based in Germany. The company currently flies millions of customers to more than 200 destinations a year. With a vast and diverse customer base, customer service is critical.
A meristem is the tissue in most plants containing undifferentiated cells (meristematic cells), found in zones of the plant where growth can take place. Meristematic cells give rise to various organs of the plant and keep the plant growing. The shoot apical meristem (SAM) gives rise to organs like the leaves and flowers, while the root apical meristem (RAM) provides the meristematic cells for the future root growth.
Plant Tissue Systems: Plant Growth. Areas within a plant that are capable of growth via mitosis are called meristems. Plants undergo two types of growth, primary and/or secondary growth. In primary growth, plant stems and roots elongate by cell enlargement as opposed to new cell production.